LIFE IN OUTER SPACE

It is the Planet which surface temperatures allow liquid water.

• Earth

• Pluto

• Mars

• Jupiter

It is the closest planet to the sun. Its surface is too hot to allow liquid water.

• Earth

• Mercury

• Mars

• Jupiter

Its surface has the coldest temperatures of any planet in our solar system. Scientists believe life is even less likely to exist.

• Mercury

• Earth

• Saturn

• Pluto

It is the planet where possibilities of life exist. Which surface temperatures could allow liquid water. But no water has yet been found.

• Saturn

• Earth

• Mars

• Jupiter

The surface of _____ is even hotter than Mercury's, so there is no liquid water exist.

_______ is the largest planet in our solar system. It is also one of the brightest objects in the nighttime sky.

___________ use models to study the stars, including models of how light behaves.

Sir ________ invented the reflecting telescope in 1670.

Some group of stars are called what?

• Constellar

• Constellations

• Milkyway

• Galaxy

They come in many sizes and can be in different stages of their lives.

• Stars

• Moon

• Meteor

• Planets